diff options
Diffstat (limited to 'board/earthlcd/favr-32-ezkit/flash.c')
| -rw-r--r-- | board/earthlcd/favr-32-ezkit/flash.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/board/earthlcd/favr-32-ezkit/flash.c b/board/earthlcd/favr-32-ezkit/flash.c deleted file mode 100644 index e45c6f4..0000000 --- a/board/earthlcd/favr-32-ezkit/flash.c +++ /dev/null @@ -1,216 +0,0 @@ -/* - * Copyright (C) 2008 Atmel Corporation - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include <common.h> - -#ifdef CONFIG_FAVR32_EZKIT_EXT_FLASH -#include <asm/arch/cacheflush.h> -#include <asm/io.h> -#include <asm/sections.h> - -DECLARE_GLOBAL_DATA_PTR; - -flash_info_t flash_info[1]; - -static void flash_identify(uint16_t *flash, flash_info_t *info) -{ - unsigned long flags; - - flags = disable_interrupts(); - - dcache_flush_unlocked(); - - writew(0xaa, flash + 0x555); - writew(0x55, flash + 0xaaa); - writew(0x90, flash + 0x555); - info->flash_id = readl(flash); - writew(0xff, flash); - - readw(flash); - - if (flags) - enable_interrupts(); -} - -unsigned long flash_init(void) -{ - unsigned long addr; - unsigned int i; - - flash_info[0].size = CONFIG_SYS_FLASH_SIZE; - flash_info[0].sector_count = 135; - - flash_identify(uncached((void *)CONFIG_SYS_FLASH_BASE), &flash_info[0]); - - for (i = 0, addr = 0; i < 8; i++, addr += 0x2000) - flash_info[0].start[i] = addr; - for (; i < flash_info[0].sector_count; i++, addr += 0x10000) - flash_info[0].start[i] = addr; - - return CONFIG_SYS_FLASH_SIZE; -} - -void flash_print_info(flash_info_t *info) -{ - printf("Flash: Vendor ID: 0x%02lx, Product ID: 0x%02lx\n", - info->flash_id >> 16, info->flash_id & 0xffff); - printf("Size: %ld MB in %d sectors\n", - info->size >> 10, info->sector_count); -} - -int flash_erase(flash_info_t *info, int s_first, int s_last) -{ - unsigned long flags; - unsigned long start_time; - uint16_t *fb, *sb; - unsigned int i; - int ret; - uint16_t status; - - if ((s_first < 0) || (s_first > s_last) - || (s_last >= info->sector_count)) { - puts("Error: first and/or last sector out of range\n"); - return ERR_INVAL; - } - - for (i = s_first; i < s_last; i++) - if (info->protect[i]) { - printf("Error: sector %d is protected\n", i); - return ERR_PROTECTED; - } - - fb = (uint16_t *)uncached(info->start[0]); - - dcache_flush_unlocked(); - - for (i = s_first; (i <= s_last) && !ctrlc(); i++) { - printf("Erasing sector %3d...", i); - - sb = (uint16_t *)uncached(info->start[i]); - - flags = disable_interrupts(); - - start_time = get_timer(0); - - /* Unlock sector */ - writew(0xaa, fb + 0x555); - writew(0x70, sb); - - /* Erase sector */ - writew(0xaa, fb + 0x555); - writew(0x55, fb + 0xaaa); - writew(0x80, fb + 0x555); - writew(0xaa, fb + 0x555); - writew(0x55, fb + 0xaaa); - writew(0x30, sb); - - /* Wait for completion */ - ret = ERR_OK; - do { - /* TODO: Timeout */ - status = readw(sb); - } while ((status != 0xffff) && !(status & 0x28)); - - writew(0xf0, fb); - - /* - * Make sure the command actually makes it to the bus - * before we re-enable interrupts. - */ - readw(fb); - - if (flags) - enable_interrupts(); - - if (status != 0xffff) { - printf("Flash erase error at address 0x%p: 0x%02x\n", - sb, status); - ret = ERR_PROG_ERROR; - break; - } - } - - if (ctrlc()) - printf("User interrupt!\n"); - - return ERR_OK; -} - -int write_buff(flash_info_t *info, uchar *src, - ulong addr, ulong count) -{ - unsigned long flags; - uint16_t *base, *p, *s, *end; - uint16_t word, status, status1; - int ret = ERR_OK; - - if (addr < info->start[0] - || (addr + count) > (info->start[0] + info->size) - || (addr + count) < addr) { - puts("Error: invalid address range\n"); - return ERR_INVAL; - } - - if (addr & 1 || count & 1 || (unsigned int)src & 1) { - puts("Error: misaligned source, destination or count\n"); - return ERR_ALIGN; - } - - base = (uint16_t *)uncached(info->start[0]); - end = (uint16_t *)uncached(addr + count); - - flags = disable_interrupts(); - - dcache_flush_unlocked(); - sync_write_buffer(); - - for (p = (uint16_t *)uncached(addr), s = (uint16_t *)src; - p < end && !ctrlc(); p++, s++) { - word = *s; - - writew(0xaa, base + 0x555); - writew(0x55, base + 0xaaa); - writew(0xa0, base + 0x555); - writew(word, p); - - sync_write_buffer(); - - /* Wait for completion */ - status1 = readw(p); - do { - /* TODO: Timeout */ - status = status1; - status1 = readw(p); - } while (((status ^ status1) & 0x40) /* toggled */ - && !(status1 & 0x28)); /* error bits */ - - /* - * We'll need to check once again for toggle bit - * because the toggle bit may stop toggling as I/O5 - * changes to "1" (ref at49bv642.pdf p9) - */ - status1 = readw(p); - status = readw(p); - if ((status ^ status1) & 0x40) { - printf("Flash write error at address 0x%p: " - "0x%02x != 0x%02x\n", - p, status,word); - ret = ERR_PROG_ERROR; - writew(0xf0, base); - readw(base); - break; - } - - writew(0xf0, base); - readw(base); - } - - if (flags) - enable_interrupts(); - - return ret; -} - -#endif /* CONFIG_FAVR32_EZKIT_EXT_FLASH */ |